[ECL] Implement Gathering Stone (#14222)

Mage.Sets/src/mage/cards/g/GatheringStone.java

@@ -0,0 +1,112 @@
+package mage.cards.g;
+
+import java.util.UUID;
+
+import mage.abilities.Ability;
+import mage.abilities.common.AsEntersBattlefieldAbility;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.ChooseCreatureTypeEffect;
+import mage.abilities.effects.common.cost.SpellsCostReductionAllOfChosenSubtypeEffect;
+import mage.abilities.meta.OrTriggeredAbility;
+import mage.abilities.triggers.BeginningOfUpkeepTriggeredAbility;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.cards.CardsImpl;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.SubType;
+import mage.constants.Zone;
+import mage.filter.common.FilterCreatureCard;
+import mage.game.Game;
+import mage.players.Player;
+
+/**
+ *
+ * @author muz
+ */
+public final class GatheringStone extends CardImpl {
+
+    public GatheringStone(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{4}");
+
+        // As this artifact enters, choose a creature type.
+        this.addAbility(new AsEntersBattlefieldAbility(
+            new ChooseCreatureTypeEffect(Outcome.Benefit)
+        ));
+
+        // Spells you cast of the chosen type cost {1} less to cast.
+        this.addAbility(new SimpleStaticAbility(
+            new SpellsCostReductionAllOfChosenSubtypeEffect(
+                new FilterCreatureCard("Creature spells you cast of the chosen type"), 1, true
+            )
+        ));
+
+        // When this artifact enters and at the beginning of your upkeep, look at the top card of your library.
+        // If it's a card of the chosen type, you may reveal it and put it into your hand.
+        // If you don't put the card into your hand, you may put it into your graveyard.
+        this.addAbility(new OrTriggeredAbility(
+            Zone.BATTLEFIELD,
+            new GatheringStoneEffect(),
+            false,
+            "When this artifact enters and at the beginning of your upkeep, ",
+            new EntersBattlefieldTriggeredAbility(null),
+            new BeginningOfUpkeepTriggeredAbility(null)
+        ));
+    }
+
+    private GatheringStone(final GatheringStone card) {
+        super(card);
+    }
+
+    @Override
+    public GatheringStone copy() {
+        return new GatheringStone(this);
+    }
+}
+
+class GatheringStoneEffect extends OneShotEffect {
+
+    GatheringStoneEffect() {
+        super(Outcome.Benefit);
+        staticText = "look at the top card of your library. " +
+                "If it's a card of the chosen type, you may reveal it and put it into your hand. " +
+                "If you don't put the card into your hand, you may put it into your graveyard";
+    }
+
+    private GatheringStoneEffect(final GatheringStoneEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public GatheringStoneEffect copy() {
+        return new GatheringStoneEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller == null) {
+            return false;
+        }
+        Card topCard = controller.getLibrary().getFromTop(game);
+        if (topCard == null) {
+            return false;
+        }
+        SubType subtype = ChooseCreatureTypeEffect.getChosenCreatureType(source.getSourceId(), game);
+        controller.lookAtCards("Top card of library", topCard, game);
+        if (topCard.hasSubtype(subtype, game)) {
+            if (controller.chooseUse(Outcome.DrawCard, "Reveal " + topCard.getName() + " and put it into your hand?", source, game)) {
+                controller.revealCards(source, new CardsImpl(topCard), game);
+                controller.moveCards(topCard, Zone.HAND, source, game);
+                return true;
+            }
+        }
+        if (controller.chooseUse(Outcome.Neutral, "Put " + topCard.getName() + " into your graveyard?", source, game)) {
+            controller.moveCards(topCard, Zone.GRAVEYARD, source, game);
+        }
+        return true;
+    }
+}

Mage.Sets/src/mage/sets/LorwynEclipsed.java

@@ -141,6 +141,7 @@ public final class LorwynEclipsed extends ExpansionSet {
         cards.add(new SetCardInfo("Formidable Speaker", 366, Rarity.RARE, mage.cards.f.FormidableSpeaker.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Gallant Fowlknight", 17, Rarity.COMMON, mage.cards.g.GallantFowlknight.class));
         cards.add(new SetCardInfo("Gangly Stompling", 226, Rarity.COMMON, mage.cards.g.GanglyStompling.class));
+        cards.add(new SetCardInfo("Gathering Stone", 257, Rarity.UNCOMMON, mage.cards.g.GatheringStone.class));
         cards.add(new SetCardInfo("Giantfall", 141, Rarity.UNCOMMON, mage.cards.g.Giantfall.class));
         cards.add(new SetCardInfo("Gilt-Leaf's Embrace", 177, Rarity.COMMON, mage.cards.g.GiltLeafsEmbrace.class));
         cards.add(new SetCardInfo("Glamer Gifter", 49, Rarity.UNCOMMON, mage.cards.g.GlamerGifter.class));